Intercept page requests and customize responses. Precise, smart, endpoint, and custom matching are supported, together with request-body, header, and query rewriting, response delays, and simulated errors.
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AI Assistance
Connect OpenAI-, Anthropic-, or Gemini-compatible models. Generate mocks in bulk from YApi or refine existing responses with natural-language instructions.
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Request Replay
Capture real page traffic and turn it into reusable mock rules. Export an entire initial request set or record a focused interaction for replay in another environment.
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Cache Recovery
Restore pages from local successful-response caches when APIs fail temporarily. Configure the active domains and cache limit for each origin.